That is how it works but it doesn't negate the frustration factor. I have everything on tentative hold for the next 8 days because it has been made clear that when Tesla calls you get one shot to schedule pickup before they move on to the next person.
I had a realization last night that our $100 "deposit" doesn't hold a space in an ordered line, it instead gives us the opportunity to purchase a vehicle whenever Tesla chooses to make one available to us. To me that changed my perspective. The power is 100% on the Tesla side and one person's frustration and cancellation results in another's good fortune to get a car. At the end of the day it still results in 150k cars delivered this quarter. I guess all that to say, we have no choice but to go with the flow and do our best to adjust if we want the car.
I'll still be frustrated though and continue to say that communication fixes 90% of this... That seems to be about as much control as I have if I want to drive an M3.
Good luck that this all works out in the next 8 days without upending too much on everyone's schedules.